Use enums for optimize_speed_feature setup
Use enums for optimize_speed_feature setup

Replace the hard coded 0 with NO_TRELLIS_OPT.

Change-Id: I56a34fd4d920148104fa00da089b37b682064b37

GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom